document.write( "Question 1138549: Express (x + iy)(u - iv)(x - iy)(u + iv) in the form a + ib, where a, b € R \n" ); document.write( "

Algebra.Com's Answer #756344 by MathLover1(20849) $\"\"$ $\"About$

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\n" ); document.write( " $\"%28x+%2B+iy%29%28u+-+iv%29%28x+-+iy%29%28u+%2B+iv%29\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"+%28u%5E2+-+%28iv%29%5E2%29%28x%5E2+-+%28iy%29%5E2%29\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"%28u%5E2+-+%28i%29%5E2v%5E2%29%28x%5E2+-+%28i%29%5E2y%5E2%29\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"%28u%5E2+-+%28-1%29v%5E2%29%28x%5E2+-+%28-1%29y%5E2%29\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"+%28u%5E2+-+%28-1%29v%5E2%29%28x%5E2+-+%28-1%29y%5E2%29\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"%28u%5E2+%2Bv%5E2%29%28x%5E2+%2By%5E2%29\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"x%5E2%2Au%5E2++%2By%5E2%2Au%5E2%2Bx%5E2v%5E2+%2By%5E2v%5E2\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"x%5E2%28u%5E2+%2Bv%5E2%29+%2By%5E2%28u%5E2+%2Bv%5E2%29\"$ \r
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